Question

I am new to python,can anybody please explain the following syntax,

               for i in [line.split('"') for line in open('a.txt')]:
                    ......
                    ......
                    ......

Answer 1

The file a.txt is opened and read line by line
For each line from the file, the line is split on the " characters –> we’ll call these tokens.
The lines of code in the indented block presumably use these tokens somehow

In a nutshell, tis would parse the contents of a file into token delimited with either newline characters or quotation mark characters.

If the input file is:

ab"cdef"g
h"ijk"lmno"p
q

.. the program would would return the tokens:

ab
cdef
g\n
h
ijk
lmno
p\n
q\n